Vehicle wheel



Jul 5, 1932.

E. BOSSERT VEHICLE WHEEL Filed Dec. 20, 1928 R O T N E V m BY alum-dATTORNE% v v w Patented July 5, 1932 UNITED, ures PATENT orrlce'EWARD.BOSSERT, 0]? EAST CLEVELAND, OHIO,

Assroxon 'ro iwrmiui. mrnmn AND STEEIJ CASTINGS COIPANY, OI CLEVELAND,OHIO, A CORPORATION 01'' OHIO vnmcm m Application filed December 80,1988. Serial llo. 827,828.

This invention relates to vehicle wheels and is more particularlyconcerned with wheels adapted to have rubber tires secured thereto. Aprime object of my invention is the provision of a wheel having aperiphery so formed as to produce an efi'ective gripping surface for thetire, and which'wheel, at the same time, may be cast expeditiously andat a minimum of expense. In carrying out my invention I provide theperiphery of the wheel with teeth or corrugations extending transverselythereof; or, in other words,

arallel with the axis of rotation of the wheel. uch teeth orcorrugations not only aid the rubber in gripping and adheringfirmly tothe wheel rim, but also, as will appear more specifically hereinafter,permit casting to be effected more readliy and and cheaply than hasheretofore been the case with wheels having tire-retaining ridges orcorru ations. My invention also-comprises various eatures which I shallhereinafter describe and claim.

In the accompanying drawing,

Fig. 1 is a transverse section through a wheel embodying my inventionand having a tire secured thereto, the hub .of the wheel being shown inelevation.

Fig. 2 is a view of said wheel and tire in side elevation, certain ofthe transversely extending teeth or ridges on the periphery of the wheelbeing shownin dotted lines.

Fig. 3 is a detail view in vertical section, taken on line 3-3 of Fig.1.-

The wheel is indicated generally at A, the hub thereof being designatedby numeral 2. The wheel in con unction with which my invention isillustrated is of a type used extensively for wheelbarrows, although itis obiously capable'of use in connection with vehicles generally. Asolid rubber tire 3 is shown on the rim of said wheel, said tire beingcaused to adhere to said rim, as by vulcanization. The rim of-the wheelis provided with teeth or ridges 4, which teeth extend transversely ofsaid rim. These teethnot only provide the rubber with a grippingsurface, aiding materially in retaining the tire on the wheel, but theyfurther produce a structurewhich may be very readily cast. Heretofore,

wheels of this general description have been cast with thetire-retaining teeth or grooves extending circumferentially of thewheel. In forming the molds for such wheels, it is necessary to use arim core extending entirely around the peri hery of the casting in orderto provide for t e withdrawal of the pattern from the mold. The wheelwhich I have invented can be molded without the necessity of providing arim core, whereby the cost of production is substantially lowered.

The line X-X in Fig. 1 desi ates what is known as the parting line o thewheel mold; that is, this line indicates the plane of separation of thehalves or sections of the mold for the wheel. It will be noted I that Ihave shown the diameter of the wheel' rim at the partin line somewhatgreater than it is at the e ges of the rim, and that also the teeth orcoves 4 terminate clear of the edges of saif rim, being stopped at thepoints 5. The rubber molds around the ends of the teeth, andthis,together with the formation of the rim with greater diameter at theparting line affords the tire a very effective grip on the rim againstlateral displacement.

The terms and expressions which I have employed are used as terms ofdescription and not of limitation, and I have no intention, in the useof such terms and expressions, of

. excluding any mechanical aigivalents of the features shown and desc dor portions thereof, but recognize that various structuralmodificationsare possible within the scope of the invention claimed.

What I claim is:

tire indicated at 3.

1. A wheel com risin a metallic rim having a periphery 0 less 'ameter atthe edges than at a portion'intermediate said edges, and tire-retainingteeth on said periphe extending transversely flexible material coveringsaidteeth.

thereof, and a tire of 2. A wheel comprising a metallic rim hav- 1 ingtire retaining" teeth on its peri hery, said teeth extendingtransversely of t e periphe and havin spaces between and aroun themexten mg to the ing said teeth.

of the wheel, and a tire of. flexible material coverspaces spacestherebetween, said tire said tire with respect tosai I edges thereof,and a 2 riphery' afiording a grippin surface for a tire and opposinglateral isiplacement of means comprising transversely ridges inte l withsaid periphery and havmg to the edges of the wheel whereby the wheelcan: be molded without the use of cores around the said periphery, and atire of flexible material covering said teeth. 4. A wheel comprising asubstantially continuous metal rim, transversely extendin tire retaininteeth onthe outer surface 0 said rim an integral therewith, the outersurface of said rim, as well as said teeth, extending radially outwardlyat least as much in portions disposed progressivel nearer thelongitudinal middle portion 0 the rim as in other portions disposed atthe lateral tire of flexible material covering said teeth, and extendinginto the being adhesive- 1y secured to said rim.

of said rim as at the edges thereof w 5. A metal wheel comprising asubstantially continuous metal rim and having spaced transverselyextendin r tire retaining teeth projecting from the ace thereof andintegral therewith, said teeth and the spaces therebetween extendingfrom the central ortion of said rim laterally toward the e ges thereofand being of a radial extent outwardly at least as great at the centralortign ere said rim can be cast without the use 0 f cores, and a tire offlexible material covering said teeth and extending into the s acestherebetween, said tire being adhesive y secured to said rim.

In testimony whereof, I have signed my name to this specification this18th day of December, 1928.

wheel, said extending tween and around them extend- EDWARD BOSSERT.

